@inproceedings{DiamantidisSykoraBertacca, author = {Diamantidis, Dimitris and S{\´y}kora, Miroslav and Bertacca, Elena}, title = {Obsolescence Rate: Framework, Analysis and Influence on Risk Acceptance Criteria}, series = {6th International Symposium on Life-Cycle Civil Engineering (IALCCE), Ghent, Belgium}, booktitle = {6th International Symposium on Life-Cycle Civil Engineering (IALCCE), Ghent, Belgium}, abstract = {Buildings are major long lasting assets of the society and business enterprises and form a significant part of infrastructure management. They require continual maintenance and in many cases they can become inap-propriate for their original purpose due to obsolescence and are demolished. The present contribution ex-plores the obsolescence of buildings and in particular the definitions of obsolescence, the related influenc-ing factors and the associated uncertainties. Thereby definitions of the obsolescence rate based on the physi-cal and useful (service) life are clarified. The experienced useful life of buildings in Finland, Germany and North America is statistically analysed, utilizing available databases, and comparisons with the design (minimum) working life specified in standards are made. The probability of not exceeding the required min-imum service life is evaluated and discussed. Whereas many factors affecting the obsolescence rate are be-yond the control of civil engineers, particular attention needs to be paid to cases where the service life of the structure is determined by physical aspects related to deterioration. These cases are identified and recom-mendations to improve structural design are offered. The service life and the related renewal rate is influ-encing the risk acceptance criteria as given in ISO 2394. Such criteria are derived on the basis of economic optimization and the LQI marginal safety costs principle. A statistical model for the renewal rate is obtained and its influence on the target reliability is investigated for a representative failure limit state. The influence of the obsolescence rate is quantified and critically disputed.}, language = {en} } @article{daSilvaMotaHinckelRoccoetal., author = {da Silva Mota, Fabio Antonio and Hinckel, Jose Nivaldo and Rocco, Evandro Marconi and Schlingloff, Hanfried}, title = {Modeling and Analysis of a LOX/Ethanol Liquid Rocket Engine}, series = {Journal of Aerospace Technology and Management}, volume = {10}, journal = {Journal of Aerospace Technology and Management}, publisher = {Inst Aeronautica \& Espaco-IAE}, doi = {10.5028/jatm.v10.914}, abstract = {This work studies the performance and dry mass of the under development LOX/Ethanol L75 liquid rocket engine. To this end, an object-oriented program written in C++ was developed. The program is intended to be versatile and easily extensible in order to analyze different configurations of liquid rocket engines. The UML (Unified Modeling Language) tool is used to model the architecture of the codes. UML diagrams help to visualize the code structure and the communication between objects, enabling a high degree of abstraction. The cryogenics Vulcain and HM7B engines power cycles along with the staged-combustion SSME engine perform the verification of the codes. Finally, the influence of changes in design parameters on the performance and dry mass of the L75 rocket engine is analyzed.}, language = {en} } @article{BraunGebhardMatysiketal., author = {Braun, Peter and Gebhard, J{\"u}rgen and Matysik, Frank-Michael and Rabl, Hans-Peter}, title = {Potential Technical Approaches for Improving Low-Temperature NOx Conversion of Exhaust Aftertreatment Systems}, series = {Chemie Ingenieur Technik}, volume = {90}, journal = {Chemie Ingenieur Technik}, number = {6}, publisher = {WILEY-VCH}, doi = {10.1002/cite.201700122}, pages = {762 -- 773}, abstract = {Lean-burn engines, such as diesel engines, are widely used in mobile and stationary applications. Operation of lean-burn engines leads to formation of distinct amounts of nitrogen oxides (NO and NO2). Efficient aftertreatment is mandatory to meet legal requirements, especially at low exhaust temperatures, as for the future a decline of the exhaust temperature level can be predicted due to improved engine efficiencies. Within this review, potential technical solutions to enhance the DeNO(x)-aftertreatment efficiency at low exhaust temperatures are presented.}, language = {en} } @article{KasparRablMayer, author = {Kaspar, Marcel and Rabl, Hans-Peter and Mayer, Wolfgang}, title = {Ion-Molecule Reaction for the Selective Detection of Hydrocarbons in Diesel Exhaust Gas}, series = {Chemie Ingenieur Technik}, volume = {90}, journal = {Chemie Ingenieur Technik}, number = {6}, publisher = {WILEY-VCH}, doi = {10.1002/cite.201700075}, pages = {826 -- 834}, abstract = {The hydrocarbons present in the diesel exhaust gas are analyzed. A mass spectrometer is used for the measurements, and it operates on the basis of an ion-molecule reaction. This method is especially suitable because it is selective, is as free of fragments as possible, and is highly sensitive to the species that need to be measured. The study shows that numerous hydrocarbons in diesel exhaust gas can be identified. In particular, three molecules, ethyne, ethene and propene, were analyzed online in-depth on an engine test bench under different engine operating conditions.}, language = {en} } @article{BarzSeligerMarxetal., author = {Barz, Tilman and Seliger, Dominik and Marx, Klemens and Sommer, Andreas and Walter, Sebastian F. and Bock, Hans Georg and Koerkel, Stefan}, title = {State and state of charge estimation for a latent heat storage}, series = {Control Engineering Practice}, volume = {72}, journal = {Control Engineering Practice}, publisher = {Pergamon-Elsevier d.}, doi = {10.1016/j.conengprac.2017.11.006}, pages = {151 -- 166}, abstract = {A nonlinear state observer is designed for a thermal energy storage with solid/liquid phase change material (PCM). Using a physical 2D dynamic model, the observer reconstructs transient spatial temperature fields inside the storage and estimates the stored energy and the state of charge. The observer has been successfully tested with a lab-scale latent heat storage with a single pass tube bundle and the phase change material located in a shell around each tube. It turns out that the observer robustly tracks the real process data with as few as four internal PCM temperature sensors. © 2017 Elsevier Ltd. All rights reserved.}, language = {en} } @article{Roesel, author = {R{\"o}sel, Birgit}, title = {Just-in-Time Teaching f{\"u}r einen Grundkurs Regelungstechnik - Ergebnisse und Auswirkungen der Profistufe des Zertifikats Hochschullehre}, series = {Didaktiknachrichten}, journal = {Didaktiknachrichten}, number = {06}, publisher = {Zentrum f{\"u}r Hochschuldidaktik (DiZ)}, pages = {66 -- 71}, language = {de} } @misc{Weiss, author = {Weiss, Nils}, title = {Vulnerabilities of OBD2 Dongles}, series = {RCAR Annual Conference, 2018, Munich, Germany}, journal = {RCAR Annual Conference, 2018, Munich, Germany}, language = {en} } @inproceedings{MaeuleRabl, author = {M{\"a}ule, Paul and Rabl, Hans-Peter}, title = {Correlation of Oil Emissions with Particulate Emissions of Gasoline Engines}, series = {Internationales AVL-Forum Abgas- und Partikelemissionen, 20. und 21. Februar 2018, Ludwigsburg}, booktitle = {Internationales AVL-Forum Abgas- und Partikelemissionen, 20. und 21. Februar 2018, Ludwigsburg}, publisher = {AVL Deutschland}, address = {Mainz}, pages = {1 -- 9}, abstract = {Recent developments in exhaust gas legislation make it necessary to focus the research at the particulate emissions from gasoline engines and technologies for their reduction. In addition to the particulates resulting from the combustion of the fuel, the oil emissions represent another possible source for particulate emissions. This paper presents a measurement method which can be used to quantify stationary as well as dynamic oil emissions of gasoline engines. Furthermore, the correlation between the oil emissions and the particulate emissions is the focus of the investigations. Conventional methods for the determination of the oil emissions, such as the gravimetric and the volumetric measurement, are unsuitable since they require long engine operation times to provide useful results. These methods therefore do not allow a fast online measurements during the dynamic operation. For this reason, a new measuring method was used, which allows for a time-resolved online measurement of the oil emissions. This measurement method is based on the sulfur tracer method, which uses the sulfur that is naturally contained in the engine oil as a tracer. The sulfur concentration in the exhaust gas is determined by using an Ion-Molecule-Reaction mass spectrometer. The determination of the particulate emissions corresponds to the PMP regulation. The studies carried out under steady state and dynamic conditions show a clear correlation between the oil consumption and the number of particulates in the exhaust gas. In the case of the dynamic measurements it could also be shown that time-resolved measurements of the oil consumption are possible with the used measurement setup. In addition, it was shown that the number of particulates does not influence the measurement of the SO2-concentration. Furthermore, the different effects of burned and unburned oil emissions have been evaluated by the dosing of the oil into the exhaust gas. The overall conclusion of the measurements shows a strong influence of the oil emissions on the particulate emissions. Therefore, it is crucial to reduce the oil emissions. Possible approaches for this reduction can be improved turbocharger sealing concepts, new piston ring designs or more efficient oil separators for the crankcase ventilation system.}, language = {en} } @inproceedings{SmolareckFaisstSchneider, author = {Smolareck, Elisabeth and Faisst, Holger and Schneider, Ralph}, title = {Modellbasierte Korrektur von Inertialsensor-Signalen - Ein Schritt auf dem Weg zum hochautomatisierten Fahren}, series = {Konferenz: AALE 2018 - 15. Fachkonferenz, Das Forum f{\"u}r Fachleute der Automatisierungstechnik aus Hochschulen und Wirtschaft 01.03.2018 - 02.03.2018 in K{\"o}ln, Deutschland}, booktitle = {Konferenz: AALE 2018 - 15. Fachkonferenz, Das Forum f{\"u}r Fachleute der Automatisierungstechnik aus Hochschulen und Wirtschaft 01.03.2018 - 02.03.2018 in K{\"o}ln, Deutschland}, publisher = {VDE-Verlag}, address = {Berlin}, isbn = {978-3-8007-4522-7}, pages = {1 -- 10}, abstract = {Infolge neuer Zielsetzungen im Automobilbereich, wie z. B. der Weiterentwicklung von Fahrerassistenzsystemen hin zum hochautomatisierten Fahren (HAF), ergeben sich erh{\"o}hte Anforderungen an die Signalg{\"u}te der im Fahrzeug eingesetzten Inertialsensoren f{\"u}r Drehraten und Beschleunigungen. Da deren Erf{\"u}llung {\"u}ber einen hardwarebasierten Ansatz nicht immer m{\"o}glich und sinnvoll ist, strebt die Firma Continental eine Software-L{\"o}sung zur modellbasierten Verbesserung dieser Sensorsignale an.}, language = {de} } @article{GaertnerRablZink, author = {G{\"a}rtner, Uwe and Rabl, Hans-Peter and Zink, Uwe}, title = {Exhaust Gas Aftertreatment of the Future}, series = {MTZ worldwide}, volume = {79}, journal = {MTZ worldwide}, number = {7-8}, publisher = {Springer}, doi = {10.1007/s38313-018-0060-2}, pages = {70 -- 75}, language = {en} } @inproceedings{BresinskyReusner, author = {Bresinsky, Markus and Reusner, Florian von}, title = {GLOBE - Learn and Innovate Digitization by a Virtual Collaboration Exercise and Living Lab}, series = {Interactivity, Game Creation, Design, Learning, and Innovation. 6th International Conference, ArtsIT 2017, and Second International Conference, DLI 2017, Heraklion, Crete, Greece, October 30-31, 2017, Proceedings}, booktitle = {Interactivity, Game Creation, Design, Learning, and Innovation. 6th International Conference, ArtsIT 2017, and Second International Conference, DLI 2017, Heraklion, Crete, Greece, October 30-31, 2017, Proceedings}, publisher = {Springer Nature}, doi = {10.1007/978-3-319-76908-0_26}, pages = {273 -- 281}, abstract = {This paper presents an advanced interactive learning platform .dot that implements the GLOBE exercise, using innovative information and communication technologies to enhance learning and development of management and leadership skills in a complex organizational setting. GLOBE on the one hand focuses on competences around ICT and virtual collaboration, and on the other hand on digital transformation, technologies and tools at higher education institutions. By this applied science, learning and developing on the real-world platform, analysis and drive of digital innovation and transformation can be fostered. The main goal is to co-create knowledge and solutions in the following focused subjects: Management and leadership of multidisciplinary, multinational and multicultural virtual and real collaboration in a complex organizational environment. GLOBE uses real world scenarios (e.g. United Nations mission) and involves real world actors. This comprehensive educational approach should enhance learning techniques and leverage learning progress with hands-on experiences and applied science in the context of ICT and virtual collaboration, and the embodied dynamics of behavior to support innovation and development.}, language = {en} } @article{KoderSchwanzerZacherletal., author = {Koder, Alexander and Schwanzer, Peter and Zacherl, Florian and Rabl, Hans-Peter and Mayer, Wolfgang and Gruber, Georg and Dotzer, Thomas}, title = {Combustion and emission characteristics of a 2.2L common-rail diesel engine fueled with jatropha oil, soybean oil, and diesel fuel at various EGR-rates}, series = {Fuel}, volume = {228}, journal = {Fuel}, number = {September}, publisher = {Elsevier}, doi = {10.1016/j.fuel.2018.04.147}, pages = {23 -- 29}, abstract = {To investigate the combustion and emission behavior of straight vegetable oils (SVO), jatropha oil, soybean oil, and diesel fuel were tested. For this research, a 2.2L common-rail engine with a two-stage turbocharging concept was equipped with a cylinder pressure indication system, an exhaust-gas analyzer, an AVL Micro Soot sensor and a Scanning Mobility Particle Sizer 3936 (SMPS) device to detect the particle-size-distribution (PSD). At a low and mid-load engine-operating point (EOP), the thermodynamic and emissions were investigated under various exhaust gas recirculation (EGR) rates with respect to the PSD. Moreover, the injection behavior of the three test fuels was analyzed separately using an injection rate analyzer. This procedure facilitates the thermodynamic investigations of the engine process and allows the calculation of the hydraulic delay (HD) as well as the ignition delay (ID). The ID of the SVO fuels compared to diesel fuel was found to be lower at all engine-operating modes, while jatropha oil always showed the shortest ID. In the particulate-nitrogen oxide (NOX) trade-off, the SVO fuels showed higher particulate matter (PM) emissions at the low-load EOP, whereas the PM emissions of diesel fuel overtop the SVO fuels at a higher engine load. With increased EGR-rates, a rise in the particle size was observed for all fuels. At the low-load EOP, the SVO fuels showed larger particles for high EGR-rates. This effect also changed by increasing the engine-load to the mid-load EOP, wherein the particle size of the diesel fuel emissions is higher by applying elevated EGR-rates.}, language = {en} } @article{SykoraMarkovaDiamantidis, author = {S{\´y}kora, Miroslav and Markova, Jana and Diamantidis, Dimitris}, title = {Bayesian network application for the risk assessment of existing energy production units}, series = {Reliability Engineering \& System Safety}, volume = {169}, journal = {Reliability Engineering \& System Safety}, number = {January}, publisher = {Elsevier}, doi = {10.1016/j.ress.2017.09.006}, pages = {312 -- 320}, abstract = {The assessment of existing infrastructures in the energy sector is of great economic significance worldwide. Fossil power stations are reaching their design service life and rational decisions concerning extensions of service life, maintenance and replacements of devices should be based on updated information of the actual conditions of the energy devices and their components, and on cost-benefit analysis using risk analysis and probabilistic optimisation procedures. The contribution provides an integrated framework for probabilistic reliability and risk assessment of existing energy production units considering availability and human safety criteria. An extensive case study focused on risks of an energy production unit in a fossil power station is provided to support practical applications. A Bayesian network is thereby implemented to assess the risks of the selected production unit. Special emphasis is given to the input data consisting of failure rates obtained from recorded data and expert judgements. The influence of uncertainties in the considered performance indicators on the availability of the unit is analysed. It is shown that a reasonably simplified framework can provide a valuable assessment of the influence of individual devices and their components on availability and societal risk, identifying thus the major risk contributors. (C) 2017 Elsevier Ltd. All rights reserved.}, language = {en} } @article{daSilvaMotaHinckelRoccoetal., author = {da Silva Mota, Fabio Antonio and Hinckel, Jose Nivaldo and Rocco, Evandro Marconi and Schlingloff, Hanfried}, title = {Trajectory Optimization of Launch Vehicles Using Object-oriented Programming}, series = {Journal of aerospace technology and management}, volume = {10}, journal = {Journal of aerospace technology and management}, publisher = {Institute of Aeronautics and Space}, doi = {10.5028/jatm.v10.948}, abstract = {The aim of this study is to model launch vehicles with focus on 3-DOF trajectory optimization using a modular approach. Despite the large number of operational launch vehicles, they usually consist of basic components and subsystems. In other words, a launch vehicle is an assembly of stages, which in turn is divided into propellant system and engine, and the engine is an assembly of basic components such as pumps, turbines, combustion chamber, and nozzle. To allow future extension and reuse of the codes, a modular structure using object-oriented programming is used. Two formulations of state equations of the trajectory and two optimization methods are described. The launch vehicle performance will be measured by payload mass for a given mission. The simulations of the VLS-1, Ariane 5 and VLS-Alfa were performed and showed good agreement with the literature.}, language = {en} } @article{KurzweilShamoninChamonine, author = {Kurzweil, Peter and Shamonin (Chamonine), Mikhail}, title = {State-of-Charge Monitoring by Impedance Spectroscopy during Long-Term Self-Discharge of Supercapacitors and Lithium-Ion Batteries}, series = {Batteries}, volume = {4}, journal = {Batteries}, number = {3}, publisher = {MPDI}, doi = {10.3390/batteries4030035}, pages = {1 -- 13}, abstract = {Frequency-dependent capacitance C(ω) is a rapid and reliable method for the determination of the state-of-charge (SoC) of electrochemical storage devices. The state-of-the-art of SoC monitoring using impedance spectroscopy is reviewed, and complemented by original 1.5-year long-term electrical impedance measurements of several commercially available supercapacitors. It is found that the kinetics of the self-discharge of supercapacitors comprises at least two characteristic time constants in the range of days and months. The curvature of the Nyquist curve at frequencies above 10 Hz (charge transfer resistance) depends on the available electric charge as well, but it is of little use for applications. Lithium-ion batteries demonstrate a linear correlation between voltage and capacitance as long as overcharge and deep discharge are avoided.}, language = {en} } @article{SykoraDiamantidisHolickyetal., author = {S{\´y}kora, Miroslav and Diamantidis, Dimitris and Holick{\´y}, Milan and Markov{\´a}, Jana and R{\´o}zs{\´a}s, {\´A}rp{\´a}d}, title = {Assessment of compressive strength of historic masonry using non-destructive and destructive techniques}, series = {Construction and Building Materials}, volume = {193}, journal = {Construction and Building Materials}, number = {December}, publisher = {Elsevier}, doi = {10.1016/j.conbuildmat.2018.10.180}, pages = {196 -- 210}, abstract = {Masonry structures were built by various techniques using different materials, the properties of which exhibit a considerable scatter dependent on periods of construction and region-specific conditions. For historic structures with a heritage value, various non- or minor-destructive tests (NDTs) are commonly applied, while the application of destructive tests (DTs) is minimized. The contribution is based on investigations of 15 historic stone and clay brick masonry structures, for which NDT strengths of masonry units are verified by DTs. The proposed operational approach makes it possible to account for statistical uncertainty due to a limited number of DTs used to calibrate NDTs.}, language = {en} } @article{LeeSchubertOoietal., author = {Lee, Wai-Kong and Schubert, Martin J. W. and Ooi, Boon Yaik and Ho, Stanley Jian-Qin}, title = {Multi-source energy harvesting and storage for floating wireless sensor network nodes with Long Range Communication Capability}, series = {IEEE Transactions on Industry Applications}, volume = {54}, journal = {IEEE Transactions on Industry Applications}, number = {3}, publisher = {IEEE}, doi = {10.1109/TIA.2018.2799}, pages = {2606 -- 2615}, abstract = {Wireless sensor networks are widely used for environmental monitoring in remote areas. They are mainly composed of wireless sensor nodes, usually powered by batteries with limited capacity, but are expected to communicate in long range and operate for extended time periods. To overcome these limitations, many energy harvesting techniques are proposed to power wireless nodes for prolonged operation, whereas multihop techniques are utilized to extend the communication range. In this paper, a novel floating device with multisource energy harvesting technology that can be used as a wireless sensor node is proposed. The long range communication between wireless sensor nodes and a gateway is established through LoRa technology. In addition to conventional solar panels, an energy harvesting technique based on thermoelectric generators exploiting thermal differences created between water surface and materials exposed to sunlight is proposed. Energy generated from photovoltaic and thermoelectric generators is combined to power the wireless sensor node. This floating device consumes 6.6216 Wh per day when used as a wireless sensor node for the collection and transmission of environmental data. The sensor node can operate on a water surface for at least 9.6 days when it is not exposed to sunlight. During a sunny day, the floating device can harvest 8.375 Wh from solar panels and 0.425 Wh from thermoelectric generation. In other words, the floating device harvests sufficient energy to be self-sustaining during sunny days.}, language = {en} } @inproceedings{KreuzerHaslbeckBrueckl, author = {Kreuzer, Reinhard and Haslbeck, Matthias and Br{\"u}ckl, Oliver}, title = {Modellierung von Mittelspannungsnetzen zur verbesserten Nachbildung von Wirk- und Blindleistungsfl{\"u}ssen}, series = {Tagungsband der Fachtagung "Zuk{\"u}nftige Stromnetze f{\"u}r erneuerbare Energien" am 30./31. Januar 2018 in Berlin}, booktitle = {Tagungsband der Fachtagung "Zuk{\"u}nftige Stromnetze f{\"u}r erneuerbare Energien" am 30./31. Januar 2018 in Berlin}, abstract = {Das vom BMWi gef{\"o}rderte Forschungsprojekt SyNErgie (03/2015 bis 05/2018) besch{\"a}ftigt sich mit der Weiterentwicklung von Netzplanungsprozessen [1]. Im Fokus steht dabei die Modellierung von Blindleistungsfl{\"u}ssen und die dezentrale Nutzung von Blindleistungsquellen (z. B. Wechselrichter, Ladedrosseln, Kondensatoren) in Mittelspannungsnetzen, {\"u}ber welche der Blindleistungshaushalt letztendlich beeinflusst werden soll. Im Rahmen dieses Beitrags wird anhand eines realen Mittelspannungsnetzes (MS-Netz) gezeigt, welche Modellierungsschritte zur Erstellung eines m{\"o}glichst realit{\"a}tsnahen Simulationsabbilds n{\"o}tig sind. Dies ist notwendig, um der Verteilnetzplanung eine robuste Planungsgrundlage f{\"u}r die Ableitung von Entscheidungen im Rahmen eines Blindleistungsmanagements zur Verf{\"u}gung zu stellen.}, language = {de} } @article{Brueckl, author = {Br{\"u}ckl, Oliver}, title = {Pl{\"a}doyer f{\"u}r die wettbewerbliche Bereitstellung von Blindleistung}, series = {ew - Magazin f{\"u}r die Energiewirtschaft - Spezial: Digitalisierung}, volume = {117}, journal = {ew - Magazin f{\"u}r die Energiewirtschaft - Spezial: Digitalisierung}, number = {1}, publisher = {VDE Verlag}, organization = {VDE Verlag}, pages = {46 -- 48}, language = {de} } @incollection{StadlerSterner, author = {Stadler, Ingo and Sterner, Michael}, title = {Urban Energy Storage and Sector Coupling}, series = {Urban Energy Transition}, booktitle = {Urban Energy Transition}, editor = {Droege, Peter}, edition = {2. ed.}, publisher = {Elsevier}, isbn = {978-0-08-102074-6}, doi = {10.1016/B978-0-08-102074-6.00026-7}, pages = {225 -- 244}, abstract = {Global warming, greenhouse gas emissions, and the general transition toward renewable energy resources are mentioned many times within this book, and will not be repeated again here. Countries that are transitioning to use of more renewable energy sources are mainly using wind and solar power—except for a few countries that, due to their prerequisites, will mainly use hydro power and/or bioenergy. The transmission process in terms of energy generation so far is mainly happening in rural areas—not in urban centers. Most technologies do not really play an important role in urban areas, and are mainly focused on the application of solar energy. Solar energy is widely applied more in rural areas, although investigations show that its application in urban areas already fits well into the existing grid infrastructure. Whereas rural areas are more prone to grid integration problems, the energy infrastructure in urban centers is already well prepared for renewables integration. In fostering tight bundles of potentially linked energy generation, distribution, networking, and use across power and thermal systems in stationary and mobile modes, urban centers become particularly critical in the energy transition processes as energy systems are becoming completely based on renewable sources without a nuclear or fossil-based backbone. This chapter discusses the almost unlimited energy storage possibilities. It will show their enormous capabilities, but also their significant differences in many physical and economical parameters. Next, the authors discuss the necessity of combining and coupling the different energy sectors for electricity, heat, cold, gas, and transport. Finally, the authors present the conclusion that only when coupling the energy sectors and using cheap and efficient energy storage options from one energy sector to solve challenges within another energy sector will the energy transition process be managed in an efficient way.}, language = {en} }